Commit-ID: 6cf57ae8cd9916efa889dc030b1010571b4567ab
Gitweb: http://git.kernel.org/tip/6cf57ae8cd9916efa889dc030b1010571b4567ab
Author: Nicolai Stange <nicstange@xxxxxxxxx>
AuthorDate: Thu, 30 Mar 2017 22:08:49 +0200
Committer: John Stultz <john.stultz@xxxxxxxxxx>
CommitDate: Fri, 14 Apr 2017 13:11:14 -0700
x86/numachip timer: Set ->min_delta_ticks and ->max_delta_ticks
In preparation for making the clockevents core NTP correction aware,
all clockevent device drivers must set ->min_delta_ticks and
->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
clockevent device's rate is going to change dynamically and thus, the
ratio of ns to ticks ceases to stay invariant.
Make the numachip clockevent driver initialize these fields properly.
This patch alone doesn't introduce any change in functionality as the
clockevents core still looks exclusively at the (untouched) ->min_delta_ns
and ->max_delta_ns. As soon as this has changed, a followup patch will
purge the initialization of ->min_delta_ns and ->max_delta_ns from this
driver.
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Cc: Richard Cochran <richardcochran@xxxxxxxxx>
Cc: Prarit Bhargava <prarit@xxxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Signed-off-by: Nicolai Stange <nicstange@xxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
drivers/clocksource/numachip.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/clocksource/numachip.c b/drivers/clocksource/numachip.c
index 4e0f11f..6a20dc8 100644
--- a/drivers/clocksource/numachip.c
+++ b/drivers/clocksource/numachip.c
@@ -51,7 +51,9 @@ static struct clock_event_device numachip2_clockevent = {
.mult = 1,
.shift = 0,
.min_delta_ns = 1250,
+ .min_delta_ticks = 1250,
.max_delta_ns = LONG_MAX,
+ .max_delta_ticks = LONG_MAX,
};
static void numachip_timer_interrupt(void)
--
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